which one is the correct?

QUESTION 14 Malone Corporation uses the perpetual inventory method On March 1, it purchased $50,000 of inventory terms 2/10, 1/30 On March 3, Malone returned goods that cost $5,000. On March 9. Malone paid the supplier. On March 9, Malone should credit O purchase discounts for $1,000 O inventory for $1,000 purchase discounts for $900 inventory for 5000